Home / 331,255.20-496,882.80-81,937.20

Finding the Fourth Proportional to 331,255.20, 496,882.80 and 81,937.20

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Solution

The fourth proportional to 331,255.20, 496,882.80 and 81,937.20 is: 122,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,255.20 : 496,882.80 = 81,937.20 : x
  2. Step 2: Convert to fraction form
    331,255.20/496,882.80 = 81,937.20/x
  3. Step 3: Cross multiply
    331,255.20x = 496,882.80 × 81,937.20
  4. Step 4: Simplify right side
    331,255.20x = 40,713,185,360.16
  5. Step 5: Solve for x
    x = 40,713,185,360.16/331,255.20
  6. Step 6: Final answer
    x = 122,905.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.